Question

Suppose you are given a circle. Describe a method by which you can find the center of this circle.

Answer 1

To draw the center of a given circle : 
1. Draw the circle.
2. Take any two different chords AB and CD of this circle and draw perpendicular bisector of these chords.
3. let these perpendicular bisectors meet at point O.

So, O will be the center of the given circle.